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3 protocols using antibody against ha

1

Immunoprecipitation of HA-tagged Proteins

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R-H460 cells were transfected with vectors under the indicated experimental conditions for 48 h. The cells were washed twice with PBS, harvested, and lysed for 30 min in NP-40 buffer [50 mM Tris-HCl (pH 8), 150 mM NaCl, 1% NP-40, and 100X protease and phosphatase inhibitor cocktail]. Samples were diluted to 500 µg of protein in 800 µl of buffer and pre-cleared for 1 h at 4 °C with 50 µl of a 50% slurry of protein A/G-Sepharose beads (GE Healthcare). After brief centrifugation to remove pre-cleared beads, 1 µg of antibody against HA (Santa Cruz Biotechnology) was added to each sample and incubated on a rocking platform at 4 °C overnight. The immune complex was precipitated by incubation with 40 µl of protein A/G-Sepharose beads at 4 °C for 4 h. The beads were washed thrice with immunoprecipitation buffer and then boiled with sample buffer [0.1 M Tris-HCl (pH 6.8), 4% SDS, 40 mM EDTA, 20% glycerol, and β-mercaptoethanol].
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2

Antibody Characterization for Protein Analysis

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Antibodies against DYKDDDDK (FLAG) tag, p-Tyrosine (p-Tyr-100), Jak2, p-Jak2 (Tyr1007/1008), di-methyl-histone H3 (Lys9), histone H3, FLT3 and Src were from Cell Signaling Technology (CST). Antibodies against β-actin and p-Src (Tyr418) were from Sigma-Aldrich. Antibody against HA was from Santa Cruz Biotechnology. Antibody against trimethyl (Lys9) was from Abcam. Antibodies against IDH1-R132H and Trimethyl-Histone H3 (Lys4) were from EMD Millipore. Antibody against IDH1 was from R&D SYSTEMS. Antibody against PE-Cy5 Mouse Anti-Human CD235a was from BD Pharmingen. Goat anti-Mouse IgG (H+L) secondary antibody and goat anti-rabbit IgG (H+L) secondary antibody were from Thermo Fisher Scientific. Antibodies against p-IDH1 Y42 and p-IDH1 Y391 were custom-made by SHANGHAI GENOMICS, INC. Antibodies against Ki67 and IDH1 for IHC staining studies were from Abcam.
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3

Investigating Anti-inflammatory Mechanisms

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Beauvericin (purity: 97%), 5-diphenyltetrazolium bromide (MTT), and lipopolysaccharide (LPS; E. coli 0111:B4) were purchased from Sigma Chemical Co. (St. Louis, MO, USA). A luciferase construct that contained promoters sensitive to NF-κB was used as reported previously [20 (link)]. Fetal bovine serum (FBS), antibiotics (penicillin and streptomycin), phosphate-buffered saline (PBS), DMEM, RPMI 1640, and trypsin were obtained from Gibco (Grand Island, NY, USA). The murine macrophage cell line RAW264.7 and human embryonic kidney cells were purchased from the American Type Culture Collection (Rockville, CA, USA). PP2 and piceatannol were obtained from Calbiochem (La Jolla, CA, USA). Hoechst staining solution and antibodies (phospho-specific and/or total protein) against p65, p50, lamin A/C, p85, AKT, inhibitor of κBα (IκBα), Src, Syk, Myc, and β-actin were purchased from Cell Signaling Technology (Beverly, MA, USA). Antibody against HA was purchased from Santa Cruz Biotechnology (Santa Cruz, CA, USA). Rhodamine phalloidin was purchased from Life Technologies (Waltham, MA, USA).
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